This morning the inquiry into the death of Dawn Sturgess heard from Det Sgt Nick Bailey, who was poisoned with Novichok while investigating the poisonings off Yulia and Sergei Skripal in Sailsbury, and the Deputy Chief Constable of Wiltshire Police Paul Mills this afternoon.

Here’s a rundown of the day’s key lines:

• Investigating officers had to use Google to get information on the Skripals, which was how they established Sergei Skripal was a former Russian intelligence officer convicted of spying in the UK
• An email from counter-terror police had left Wiltshire Police inspectors feeling like they were 'over reacting', according to inspector Gill Hughes
• Initially, officers felt that Yulia and Sergei Skripal had had a reaction to fentanyl
• Deputy Cheif Constable Mills said that Wiltshire Police 'did not proactively provide' adviceon future cases involving nerve agents and that more officers should have been briefed on them
• Det Sgt Nick Bailey told the inquiry his recollection of the events of March 2018 are "hazy at best", with our reporter there saying it appears being poisoned by Novichok has affected his memory

Thank you for joining us today. The coverage was bought to you by Emma Grimshaw, Sarah Tunnidge, Richard Greenway, Chris Kelly, Suneil Asar, Alex Smith and Jamie Whitehead.

Mansfield asks if there were any public warnings that could have been taken before the Salisbury poisoning, if he'd known about the Skripals living locally.

Lord Hughes, who is presiding over the inquiry, slaps this down saying it can only be done in a closed hearing.

It will be dealt with, he says, but not in this hearing today.

And that brings today's proceedings to a close - stick with us and we'll recap everything we've heard.

We're now hearing questions from Michael Mansfield KC, who is representing Dawn Sturgess' family.

He asks Mills if he would've known of the possibility of a secondary incident happening following the Skripals' poisoning. Mills answers saying he was aware of searching being undertaken by counter-terrorism police.

Mansfield questions what was done to protect members of the public.

Mills responds by saying that when "nationally agreed" messaging was agreed by Public Health England, he was then responsible for putting out that information.

As a reminder, you can watch this afternoon’s proceedings by pressing Watch live at the top of this page.

Deputy Chief Constable Mills admits more police officers should have been briefed about the dangers of nerve agents and what to look out for.

"We should have approached the national CBRN Centre and made a case for decimating it further than what they said we can do," he says.

We're now moving on to the guidance given to officers about how to deal with potential future cases of nerve agent poisoning.

In his witness statement, Deputy chief constable Mills says Wiltshire Police "did not proactively provide any advice" to officers or staff who might attend any future incidents.

He adds that, in hindsight, "it would have been sensible" to have reminded them of the guidance.

Andrew O'Connor KC goes on to share minutes of a meeting which suggests Public Health England were moving towards telling the public to not pick up unidentified containers.

Mills says this advice was not given to the public until after Dawn Sturgess and Charlie Rowley were poisoned.

He says he wasn't aware that the container advice was something that was being considered.

After a short break, the inquiry is now hearing about an update Mills received on 5 March 2018, that Public Health England believed there were no known wider health risks to the public, following the Skripals' poisoning.

Three months later Dawn Sturgess and Charlie Rowley were poisoned by a nerve agent of the same kind.

Sturgess died as a result of the poisoning.

In a redacted email exchange between counter terrorism police officers on 13 March - nine days after the incident - concerns are raised about the lack of satisfactory cordon outside the Skripal property, and a scene guard was "absent yet again" from their post.

That, it says, meant a "dangerous crime scene" could have been accessed by the public.

Detective chief constable Paul Mills says he was not aware of these concerns, but says they were dealing with 11 different scenes at the time - each of which needed cordons.

Andrew O'Connor KC says it seems "pretty extraordinary" that it was potentially left unattended overnight.

Mills says "if that was the case, I'd be significantly concerned."

Andrew O'Connor KC asks Mills if he remembers discussing whether a search of Sergei Skripal's house was "appropriate" at the time.

As we reported earlier, Det Sgt Nick Bailey was poisoned by a nerve agent during a search of the house.

Mills says they wanted to check on any other individuals who might be inside the house, and also search for information.

"I don't think it was my place" to decide that, he says, adding that it was a "dynamic situation".

In Insp Corner's statement, being read out now, he says he spoke with a duty officer at the National CBRN Centre.

Corner informed the officer that the symptoms were not fentanyl poisoning but possibly due to radiation or nerve agent poisoning.

He says the CBRN officer said she would speak to scientists and call him back.

In Corner's statement he says he then received "a large number of calls from the scientific community", and the message was that the symptoms did not sound like radiation poisoning, and there was no further mention of a chemical agent being a likely cause at the time.

The inquiry hears that Special Branch chose not to assign a senior officer to investigate the incident.

Andrew O'Connor KC asks if, looking at it now, it was worthy of Special Branch taking the lead.

Mills says it's a "good faith" model, and he doesn't remember a discussion about having a Special Branch investigator taking over the investigation.

There was only "open source information" on the Skripals at the time, Mills says, and in his witness statement he says there was "no relevant information" on the Skripals in Wiltshire Police's system.

Mills is questioned again about the witness statement Insp Hughes gave - she was managing the control room at the time.

Hughes recalls calling Special Branch and asking for direction about what to do, but says the chief inspector on duty "didn't seem to be particularly interested".

"He told me that no ex-Russian spy was living in our area," her statement says, "he was very dismissive and acting totally that we were over reacting".

Andrew O’Connor KC is still reading Inspector Hughes’ statement, which mentions officers using Google to search for background information on the Skripals.

The statements reads officers established “he was a former Russian intelligence officer convicted of spying for the UK”.

Hughes then "locks down the log" to keep control over who can view the records.

Deputy chief constable Paul Mills, giving evidence, says he believes this "was a reasonable thing to do", adding it is a judgement someone in her role would be expected to make.

As Insp Hughes had not received a call from the on call CBRN advisor from Avon & Somerset Police, she made a call to Peter Tuite CBRN advisor at Wiltshire Police, but he was off duty.

She says there was another advisor who was on holiday, and then there was VN005 – an officer whose anonymity needs to be protected - who is giving evidence next week

She called VN005 updating them on what she knew, and they suggested against searches of the home or vehicle belonging to the Skripals, until there was more information from the hospital.

The initial thinking from officers was that it might have been fentanyl that caused the Skripals' reaction, says KC Andrew O’Connor.

Looking back at a statement from the inspector managing the control room that night - Insp Hughes - she had recent training on fentanyl and says she had an open mind as she "knew how dangerous it was"

The duty inspector was called and together they decided to contact a CBRN advisor and someone from the fire service because of potential chemical involvement.

Hughes called an advisor but never got through, leaving a voicemail message which was never returned.

Her statement says that was a "particular frustration".

The inquiry is just starting up again after the break for lunch.

Deputy Chief Constable Paul Mills is now giving evidence. Stick with us as we bring you the latest.

You can watch proceedings by pressing Watch live at the top of this page.

Sarah Turnnidge
BBC News, West of England

To understand how we got here, it’s useful to trace the events that led up to this moment.

In March 2018, Sergei and Yulia Skripal were poisoned with Novichok in Salisbury, effectively shutting down the city and sparking international outcry.

Then, as things were finally getting back to normal, Dawn Sturgess and her partner Charlie Rowley were exposed to the same nerve agent on 30 June.

While Rowley survived, Sturgess passed away on 8 July 2018.

Three men, thought to be members of the Russian intelligence agency the GRU, have been named by police as suspects in the poisoning.

The Russian government has always denied involvement in the incident, describing the current inquiry as a "circus".

• A full timeline of the poisonings

This morning we have been hearing from Det Sgt Nick Bailey, who was poisoned with Novichok while investigating the poisonings off Yulia and Sergei Skripal in Sailsbury. Here's what we heard:

• Bailey told the inquiry his recollection of the events of March 2018 are "hazy at best", with our reporter at the inquiry saying it appears the poisoning has affected his memory
• He says he doesn't remember entering Sergei Skripal's house, but confirmed he was the one who opened the door - he was also the first person to enter the house
• Nerve agent left on the door handle is what poisoned the officer
• The officer was wearing protective equipment at the time, but says it is "quite possible" that his gloved hand might have come in to contact with his face. Bailey says he is unsure if he received proper training in the use of PPE equipment
• In a statement read out to the inquiry, the superintendent who authorised the search of the house says he has "cause to regret" advising it as it did lead to Bailey being poisoned with Novichok
• Within hours of visiting the house, Bailey says he started noticing symptoms of poisoning. And in the days following his exposure, his symptoms progressively got worse - it was "quite scary", he says

The inquiry is taking a break now but will be returning shortly, when deputy chief constable Paul Mills will give evidence at approximately 13:30 GMT.

The inquiry is now taking a break for lunch.

Stick with us and we'll shortly recap everything you need to know about today's hearing so far, before it resumes later this afternoon.

And with that, Bailey has finished giving his evidence.

Wrapping up, inquiry chair Lord Hughes says: “Mr Bailey I’m very conscious you have had to relive a fairly nasty experience but it was necessary and thank you for doing it."

He adds that Bailey "has no further obligation" to the inquiry and that he is free to go.

Some of the other officers referred to during Nick Bailey's evidence are due to appear at the inquiry next week, including his superior officer who decided to search the house – Detective Superintendent Ben Mant.

So too will the Wiltshire police officer who joined the search as a specialist in dealing with dangerous chemical environments, referred to only by the cypher VN005.